From patchwork Sun Jun 12 21:14:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 12878831 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF234C433EF for ; Sun, 12 Jun 2022 21:15:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236195AbiFLVPM (ORCPT ); Sun, 12 Jun 2022 17:15:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235719AbiFLVPK (ORCPT ); Sun, 12 Jun 2022 17:15:10 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 58E192F037; Sun, 12 Jun 2022 14:15:09 -0700 (PDT) Received: by linux.microsoft.com (Postfix, from userid 1004) id 2C04A20C14C2; Sun, 12 Jun 2022 14:15:09 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 2C04A20C14C2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxonhyperv.com; s=default; t=1655068509; bh=0dsZ0bZFwegjOW5xJagkjlSAdsffEmIkK2SaE7ckO08=; h=From:To:Cc:Subject:Date:In-Reply-To:References:Reply-To:From; b=T+vKNLYxaLdUteF7aFe1Cz4qn4nuD+uPiUqnob7XHAQ6bTTMfYB0lqdZA1TEljb1r shQ+ZVIdWXyZmSE/hxQSAVv80040Rd9It0AaAk9F454sHdvVwEg5///kuEqLn85H1E tQ6c9WFSTHDQoztYZ6HrCfVkJNzLiaBf9o5a5lt4= From: longli@linuxonhyperv.com To: "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Jason Gunthorpe , Leon Romanovsky , edumazet@google.com, shiraz.saleem@intel.com, Ajay Sharma Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Long Li Subject: [Patch v3 02/12] net: mana: Record the physical address for doorbell page region Date: Sun, 12 Jun 2022 14:14:44 -0700 Message-Id: <1655068494-16440-3-git-send-email-longli@linuxonhyperv.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1655068494-16440-1-git-send-email-longli@linuxonhyperv.com> References: <1655068494-16440-1-git-send-email-longli@linuxonhyperv.com> Reply-To: longli@microsoft.com Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Long Li For supporting RDMA device with multiple user contexts with their individual doorbell pages, record the start address of doorbell page region for use by the RDMA driver to allocate user context doorbell IDs. Signed-off-by: Long Li --- drivers/net/ethernet/microsoft/mana/gdma.h | 2 ++ drivers/net/ethernet/microsoft/mana/gdma_main.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/drivers/net/ethernet/microsoft/mana/gdma.h b/drivers/net/ethernet/microsoft/mana/gdma.h index d815d323be87..c724ca410fcb 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma.h +++ b/drivers/net/ethernet/microsoft/mana/gdma.h @@ -350,9 +350,11 @@ struct gdma_context { struct completion eq_test_event; u32 test_event_eq_id; + phys_addr_t bar0_pa; void __iomem *bar0_va; void __iomem *shm_base; void __iomem *db_page_base; + phys_addr_t phys_db_page_base; u32 db_page_size; /* Shared memory chanenl (used to bootstrap HWC) */ diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c index 49b85ca578b0..9fafaa0c8e76 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -27,6 +27,9 @@ static void mana_gd_init_registers(struct pci_dev *pdev) gc->db_page_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET); + gc->phys_db_page_base = gc->bar0_pa + + mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET); + gc->shm_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_SHM_OFFSET); } @@ -1335,6 +1338,7 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent) mutex_init(&gc->eq_test_event_mutex); pci_set_drvdata(pdev, gc); + gc->bar0_pa = pci_resource_start(pdev, 0); bar0_va = pci_iomap(pdev, bar, 0); if (!bar0_va)